What term describes the exchange of nutrients among termites?

The term that describes the exchange of nutrients among termites is known as trophallaxis. This process involves the transfer of fluids, which often contain nutrients and microorganisms, between individuals of the same species. In the context of termites, trophallaxis plays a crucial role in their social structure and digestive health, as it allows them to share essential substances that aid in digestion and contributes to the overall well-being of the colony.

Trophallaxis is particularly important for termites because they rely on symbiotic microorganisms in their guts to help break down cellulose from wood, which is their primary food source. By exchanging these nutrients, termites strengthen their colony's survival and efficiency in digesting tough plant materials.

The other terms listed do not pertain specifically to the process of nutrient exchange among termites. Photosynthesis refers to the process by which green plants and some organisms convert light energy into chemical energy in the form of glucose. Assimilation is a broader biological process whereby organisms incorporate nutrients into their cells after digestion. Ingestion simply refers to the act of taking in food, not the subsequent exchange of nutrients that occurs within a social species like termites.